16665275 has 12 divisors (see below), whose sum is σ = 22543944. Its totient is φ = 12120000.

The previous prime is 16665269. The next prime is 16665277. The reversal of 16665275 is 57256661.

It is not a de Polignac number, because 16665275 - 2¹⁸ = 16403131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16665277) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30026 + ... + 30575.

It is an arithmetic number, because the mean of its divisors is an integer number (1878662).

Almost surely, 2^16665275 is an apocalyptic number.

16665275 is a deficient number, since it is larger than the sum of its proper divisors (5878669).

16665275 is a wasteful number, since it uses less digits than its factorization.

16665275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60622 (or 60617 counting only the distinct ones).

The product of its digits is 75600, while the sum is 38.

The square root of 16665275 is about 4082.3124574192. The cubic root of 16665275 is about 255.4293676180.

The spelling of 16665275 in words is "sixteen million, six hundred sixty-five thousand, two hundred seventy-five".